Public and Private Methods in Java

By Bhau Automation • Java Access Modifiers Explained

🎯 What You Will Learn

• Difference between public and private methods
• Where to use public methods
• Why private methods are important for security
• Real Java code examples
• Interview questions and best practices

🔹 What is a Public Method?

A public method in Java can be accessed from anywhere in the program. No restrictions.

public void display() {
System.out.println("Public method");
}

🔹 What is a Private Method?

A private method can be accessed only inside the same class. Outside classes cannot access it.

private void secret() {
System.out.println("Private method");
}

⚔️ Difference Between Public and Private Methods

Public Method	Private Method
Accessible anywhere	Accessible only inside class
Supports inheritance	Not inherited
Used for APIs	Used internally

✅ Example Program

class Test {

public void show() {
System.out.println("Public Method");
secret();
}

private void secret() {
System.out.println("Private Method");
}

public static void main(String[] args) {
Test obj = new Test();
obj.show();
}
}

🎯 Why Private Methods are Important

• Enhances security
• Prevents misuse of logic
• Makes code maintainable
• Hides implementation

❓ Interview Questions

Q: Can we override private method?
A: No, private methods cannot be overridden.

Q: Why use private method?
A: To protect internal logic from misuse.

🎥 Watch Video Tutorial

👉 Click Here to Watch on YouTube

⚡ Tip: Always keep internal logic private for secure Java programs.

🚀 Created by Bhau Automation